01808nas a2200205   4500008004100000022001400041245012700055210006900182260011000251300001600361490000700377520096600384100001801350700002801368700002701396700001801423700002401441700001801465856011901483       2016                        eng d  a1463-907600aUnderstanding the electron transfer process in ZnO-naphthol azobenzoic acid composites from photophysical characterisation0 aUnderstanding the electron transfer process in ZnOnaphthol azobe  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG  a22179-221870 v183 a<p>Semiconductor nanoparticles surface modified with organic molecules capable of visible light absorption and effectively transferring the electrons to the catalytic sites have the potential to be good photocatalysts. ZnO nanoparticles of size similar to 3 nm are grafted with two azonaphthols, one conjugated and the other non-conjugated. The photophysical properties of modified ZnO indicate an effective electron transfer from the conjugated azonaphthol to ZnO but not in the case of the non-conjugated molecule. It is also observed from lifetime studies that the conjugated molecule stabilises the defect sites on ZnO nanoparticles. It is possible that excited electrons from the conjugated molecule are transferred to specific defect sites in ZnO. This apparently does not occur in the non-conjugated molecule, bringing to focus the importance of the photophysical characteristics of organic modifiers in designing visible light active photocatalysts.</p>1 aGeorge, Leena1 aKunhikannan, Athira, K.1 aIllathvalappil, Rajith1 aOttoor, Divya1 aKurungot, Sreekumar1 aDevi, Nandini  uhttps://library.ncl.res.in/content/understanding-electron-transfer-process-zno-naphthol-azobenzoic-acid-composites